Commit graph

7 commits

Author SHA1 Message Date
Dave Liu
22cca7e1cd fsl-ddr: make the self refresh idle threshold configurable
Some 85xx processors have the advanced power management feature,
such as wake up ARP, that needs enable the automatic self refresh.

If the DDR controller pass the SR_IT (self refresh idle threshold)
idle cycles, it will automatically enter self refresh. However,
anytime one transaction is issued to the DDR controller, it will
reset the counter and exit self refresh state.

Signed-off-by: Dave Liu <daveliu@freescale.com>
Acked-by: Andy Fleming <afleming@freescale.com>
2009-01-23 17:03:14 -06:00
Dave Liu
22ff3d0134 fsl-ddr: clean up the ddr code for DDR3 controller
- The DDR3 controller is expanding the bits for timing config
- Add the DDR3 32-bit bus mode support

Signed-off-by: Dave Liu <daveliu@freescale.com>
Acked-by: Andy Fleming <afleming@freescale.com>
2009-01-23 17:03:13 -06:00
Dave Liu
80ee3ce6d7 fsl-ddr: update the bit mask for DDR3 controller
According to the latest 8572 UM, the DDR3 controller
is expanding the bit mask, and we use the extend ACTTOPRE
mode when tRAS more than 19 MCLK.

Signed-off-by: Dave Liu <daveliu@freescale.com>
2009-01-23 17:03:13 -06:00
Haiying Wang
1f293b417a Add debug information for DDR controller registers
Signed-off-by: Haiying Wang <Haiying.Wang@freescale.com>
2008-10-18 21:54:05 +02:00
Haiying Wang
dbbbb3abef Make DDR interleaving mode work correctly
Fix some bugs:
  1. Correctly set intlv_ctl in cs_config.
  2. Correctly set sa, ea in cs_bnds when bank interleaving mode is enabled.
  3. Set base_address and total memory for each ddr controller in memory
     controller interleaving mode.

Signed-off-by: Haiying Wang <Haiying.Wang@freescale.com>
2008-10-18 21:54:04 +02:00
Kumar Gala
302e52e0b1 Fix compiler warning in mpc8xxx ddr code
ctrl_regs.c: In function 'compute_fsl_memctl_config_regs':
ctrl_regs.c:523: warning: 'caslat' may be used uninitialized in this function
ctrl_regs.c:523: note: 'caslat' was declared here

Add a warning in DDR1 case if cas_latency isn't a value we know about.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
2008-09-07 01:26:13 +02:00
Kumar Gala
58e5e9aff1 FSL DDR: Rewrite the FSL mpc8xxx DDR controller setup code.
The main purpose of this rewrite it to be able to share the same
initialization code on all FSL PowerPC products that have DDR
controllers.  (83xx, 85xx, 86xx).

The code is broken up into the following steps:
	GET_SPD
	COMPUTE_DIMM_PARMS
	COMPUTE_COMMON_PARMS
	GATHER_OPTS
	ASSIGN_ADDRESSES
	COMPUTE_REGS
	PROGRAM_REGS

This allows us to share more code an easily allow for board specific code
overrides.

Additionally this code base adds support for >4G of DDR and provides a
foundation for supporting interleaving on processors with more than one
controller.

Signed-off-by: James Yang <James.Yang@freescale.com>
Signed-off-by: Jon Loeliger <jdl@freescale.com>
Signed-off-by: Becky Bruce <becky.bruce@freescale.com>
Signed-off-by: Ed Swarthout <Ed.Swarthout@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-08-27 02:05:58 +02:00